"""Version extraction uses the addon asset, not the manifest schema or game version."""
import importlib.util
from pathlib import Path
import unittest
import json
import io
from unittest.mock import patch

ROOT = Path(__file__).resolve().parents[1]
spec = importlib.util.spec_from_file_location('workshop_changelog', ROOT / 'tools/workshop_changelog.py')
tool = importlib.util.module_from_spec(spec)
spec.loader.exec_module(tool)
PROJECT = 'GameProject { GUID "2528466DE220D91C" }'
TEXT = '# Changelog\n\n## Update\n\n- Gameplay fix.\n'


class WorkshopTests(unittest.TestCase):
    def test_asset_version(self):
        manifest = {'version': 1, 'asset': {'id': '2528466DE220D91C', 'version': '0.0.109', 'gameVersion': '1.8.0.13'}}
        self.assertEqual(tool.bundled_version(manifest, PROJECT), '0.0.109')

    def test_reject_wrong_addon_and_invalid_manifest(self):
        for manifest in (None, [], {}, {'asset': None}, {'asset': {'id': None}},
                         {'asset': {'id': 'OTHER', 'version': '0.0.109'}},
                         {'asset': {'id': '2528466DE220D91C', 'version': '99999.0.0'}},
                         {'version': '0.0.109', 'asset': {'id': '2528466DE220D91C'}}):
            with self.subTest(manifest=manifest), self.assertRaises(ValueError):
                tool.bundled_version(manifest, PROJECT)

    def test_update_preserves_notes_and_is_idempotent(self):
        updated = tool.update_changelog(TEXT, '0.0.109')
        self.assertIn('Latest published Workshop version: **0.0.109**', updated)
        self.assertTrue(updated.endswith('## Update\n\n- Gameplay fix.\n'))
        self.assertEqual(updated, tool.update_changelog(updated, '0.0.109'))
        next_release = tool.update_changelog(updated, '0.0.110')
        self.assertNotIn('0.0.109', next_release)
        self.assertEqual(next_release.count('Latest published Workshop version:'), 1)

    def test_bad_layout_refused(self):
        for text in ('Notes only', TEXT + 'Latest published Workshop version: **0.0.1**\n',
                     '# Changelog\nLatest published Workshop version: **0.0.1**\nLatest published Workshop version: **0.0.2**\n'):
            with self.subTest(text=text), self.assertRaises(ValueError):
                tool.update_changelog(text, '0.0.109')


class PublishedLookupTests(unittest.TestCase):
    def page(self, **overrides):
        asset = dict(id='2528466DE220D91C', currentVersionNumber='0.0.147',
                     gameVersion='1.9.0.37', versions=[dict(version='0.0.147',
                     assetId='2528466DE220D91C', published=True, approved=True)])
        asset.update(overrides)
        return '<script id="__NEXT_DATA__" type="application/json">' + json.dumps(
            {'props': {'pageProps': {'asset': asset}}}) + '</script>'

    def test_public_version_is_not_game_or_bundle_version(self):
        self.assertEqual(tool.online_version(self.page(), '2528466DE220D91C'), '0.0.147')

    def test_wrong_asset_unpublished_and_ambiguous_pages_are_rejected(self):
        cases = [self.page(id='1111111111111111'), self.page(versions=[]),
                 self.page(private=True), self.page(blocked=True),
                 self.page(currentVersionNumber='1.9.0.37'),
                 self.page(versions=[dict(version='0.0.147', assetId='2528466DE220D91C', published=False, approved=True)]),
                 self.page(versions=[dict(version='0.0.147', assetId='2528466DE220D91C', published=True, approved=False)]),
                 self.page() + self.page(), '<html>unavailable</html>']
        for page in cases:
            with self.subTest(page=page), self.assertRaises(ValueError):
                tool.online_version(page, '2528466DE220D91C')

    def test_stale_response_is_not_a_downgrade(self):
        text = tool.update_changelog(TEXT, '0.0.146')
        with self.assertRaises(ValueError):
            tool.prevent_downgrade(text, '0.0.142')
        tool.prevent_downgrade(text, '0.0.146')
        tool.prevent_downgrade(text, '0.0.147')
        tool.prevent_downgrade(tool.update_changelog(TEXT, '0.0.9'), '0.0.10')

    def test_live_sync_validates_response_and_fails_closed(self):
        with patch.object(tool.urllib.request, 'urlopen', return_value=io.BytesIO(self.page().encode())):
            self.assertEqual(tool.sync_version(PROJECT, TEXT), '0.0.147')
        with patch.object(tool.urllib.request, 'urlopen', side_effect=OSError('offline')):
            with self.assertRaises(OSError):
                tool.sync_version(PROJECT, TEXT)
        with patch.object(tool.urllib.request, 'urlopen', return_value=io.BytesIO(self.page().encode())):
            with self.assertRaises(ValueError):
                tool.sync_version(PROJECT, tool.update_changelog(TEXT, '0.0.148'))


if __name__ == '__main__':
    unittest.main()